php post

Maybe some one know why that code not works anymore in php 7 ? Beforethta was working all ok. Calculation price.

<script>
	 $(function(){
		 $('#check_price').click(function(){
			 var code= $('#something value').val();
			 var qty  = $('#sometinhg value').val();
			 var re = new RegExp(/^.*\//);
			 var rPaths= re.exec(window.location.href);

		 $("#check_title").html('Calculate price..');
			$.ajax({
			type: "POST",
			url: rPath+"home/price",
			data: {ccode:ccode,qty:qty}
			})
			.done(function(msg) {
				$("#check_title").html('calculated');
				$('#price_set').slideDown();
				$('#price_set').html(msg);
			});
		 });
	 });
	</script>